This week's episode is about Leanne Tiernan, whose disappearance was very thoroughly investigated by the West Yorkshire Police. The murderer was a local "Pet Man" named John Taylor. Joe explains the pollen evidence, and Sandra questions the validity of lifting fingerprints in films. 

The worst serial killer we've never heard of, Francis Edward Drescher, is the topic of this week's episode. Joe explains what strychnine is, and Sandra talks about the invention of gin and tonic.

The topic this week is Mary Mallon, also known as Typhoid Mary. Joe explains typhoid fever, and Sandra doesn't know what century she's in. 

This week we discuss the murders at number 10 Rillington Place. Timothy Evans was found guilty of, and executed for, the murders of his wife and daughter, Beryl and Geraldine Evans. But Timothy accused his downstairs neighbour of the murders, the key witness for the prosecution, John Christie. Joe talks about the miscarriage of justice and Sandra proposes new monikers for serial killers.

The topic this week is the murders of Isabella Ruxton and Mary Jane Rogerson, committed by Buck Ruxton. Joe explains forensic entomology and anthropology, and Sandra calls Buck out for being a lil bitch. 

This week we're talking about Helle Crafts, who was murdered by her husband Richard Crafts. Joe explains how nail polish can be used as forensic evidence, and Sandra shits on people's hobbies.

The topic this week is the poisoning of Timothy O'Bryan, who was murdered by his father Ronald O'Bryan (nicknamed The Candy Man by the media). Joe explains German idioms, and Sandra talks about the world's oldest tree. 

This week, we discuss the assassination of Georgi Markov, shot in the leg with an umbrella. Sandra asks questions about the evidence, and Joe highlights the inadequacies of the Queen's diet.

The topic this week is the crimes of Neville Heath, a con man who murdered Margery Gardner and Doreen Marshall. Joe is being particular about the way Lieutenant is supposed to be pronounced, and lockdown is taking a toll on Sandra.

The two cases we're talking about this week are the murder of Sian O'Callaghan and the murder of Becky Godden-Edwards. The murderer, taxi driver Christopher Halliwell, is suspected to have more victims. Joe talks about the court proceedings and Sandra tells Joe about berry farts.